CN113338626A - Concrete injection device capable of simultaneously stirring, extruding and injecting materials - Google Patents
Concrete injection device capable of simultaneously stirring, extruding and injecting materials Download PDFInfo
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- CN113338626A CN113338626A CN202110664238.4A CN202110664238A CN113338626A CN 113338626 A CN113338626 A CN 113338626A CN 202110664238 A CN202110664238 A CN 202110664238A CN 113338626 A CN113338626 A CN 113338626A
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- 238000003756 stirring Methods 0.000 title claims abstract description 93
- 239000000463 material Substances 0.000 title claims abstract description 72
- 239000004567 concrete Substances 0.000 title claims abstract description 36
- 238000002347 injection Methods 0.000 title claims abstract description 24
- 239000007924 injection Substances 0.000 title claims abstract description 24
- 230000005540 biological transmission Effects 0.000 claims abstract description 86
- 239000000843 powder Substances 0.000 claims abstract description 70
- 238000005507 spraying Methods 0.000 claims abstract description 62
- 239000007788 liquid Substances 0.000 claims abstract description 58
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 47
- 238000001125 extrusion Methods 0.000 claims abstract description 44
- 238000011084 recovery Methods 0.000 claims description 20
- 238000002156 mixing Methods 0.000 claims description 19
- 230000008878 coupling Effects 0.000 claims description 11
- 238000010168 coupling process Methods 0.000 claims description 11
- 238000005859 coupling reaction Methods 0.000 claims description 11
- 238000005096 rolling process Methods 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 5
- 238000003825 pressing Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000010146 3D printing Methods 0.000 abstract description 3
- 239000004568 cement Substances 0.000 description 10
- 238000000034 method Methods 0.000 description 10
- 230000008569 process Effects 0.000 description 8
- 239000000395 magnesium oxide Substances 0.000 description 7
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 7
- 239000000428 dust Substances 0.000 description 6
- GVALZJMUIHGIMD-UHFFFAOYSA-H magnesium phosphate Chemical compound [Mg+2].[Mg+2].[Mg+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O GVALZJMUIHGIMD-UHFFFAOYSA-H 0.000 description 6
- 239000004137 magnesium phosphate Substances 0.000 description 6
- 229960002261 magnesium phosphate Drugs 0.000 description 6
- 229910000157 magnesium phosphate Inorganic materials 0.000 description 6
- 235000010994 magnesium phosphates Nutrition 0.000 description 6
- 239000007921 spray Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 239000002002 slurry Substances 0.000 description 5
- 238000010276 construction Methods 0.000 description 4
- 238000006703 hydration reaction Methods 0.000 description 4
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 229910021538 borax Inorganic materials 0.000 description 3
- 238000001354 calcination Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 230000036571 hydration Effects 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 239000004328 sodium tetraborate Substances 0.000 description 3
- 235000010339 sodium tetraborate Nutrition 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000015271 coagulation Effects 0.000 description 2
- 238000005345 coagulation Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 210000004907 gland Anatomy 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 239000011398 Portland cement Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 244000145845 chattering Species 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000007580 dry-mixing Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 1
- 239000001095 magnesium carbonate Substances 0.000 description 1
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000002901 radioactive waste Substances 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000000979 retarding effect Effects 0.000 description 1
- 239000011378 shotcrete Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012384 transportation and delivery Methods 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
- E04G21/04—Devices for both conveying and distributing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B1/00—Producing shaped prefabricated articles from the material
- B28B1/001—Rapid manufacturing of 3D objects by additive depositing, agglomerating or laminating of material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B1/00—Producing shaped prefabricated articles from the material
- B28B1/24—Producing shaped prefabricated articles from the material by injection moulding
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
- E01C19/46—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for preparing and placing the materials, e.g. slurry seals
- E01C19/47—Hydraulic cement concrete mixers combined with distributing means specially adapted for road building
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
- E01C19/46—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for preparing and placing the materials, e.g. slurry seals
- E01C19/47—Hydraulic cement concrete mixers combined with distributing means specially adapted for road building
- E01C19/475—Distributing means therefor, e.g. boom-and-bucket arrangements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y30/00—Apparatus for additive manufacturing; Details thereof or accessories therefor
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
Abstract
The invention relates to the technical field of 3D printing equipment, and provides a concrete spraying device for simultaneously stirring, extruding and spraying materials, which comprises: the device comprises a main transmission motor, a dry powder homogenizing device, a water inlet manifold block, a powder-liquid stirring pipe, a hollow extrusion shaft, a hollow transmission shaft and an injection pipe; the dry powder homogenizing device is communicated with the powder-liquid stirring pipe; a hollow extrusion shaft and a hollow transmission shaft which are in transmission connection are arranged in the powder-liquid stirring pipe; the hollow extrusion shaft is provided with a stirring blade group; the hollow transmission shaft is in transmission connection with the main transmission motor, a conveying roller is arranged on the hollow transmission shaft, the tail part of the hollow transmission shaft extends out of the liquid stirring pipe, a water inlet integrated block is arranged at the tail part of the hollow transmission shaft, and a water hole matched with the water inlet integrated block is arranged at the tail part of the hollow transmission shaft; the head of the hollow transmission shaft is not sealed with the hollow extrusion shaft. The invention can synchronously complete stirring, extrusion and injection, is suitable for the injection of the quick-setting concrete material and improves the production efficiency.
Description
Technical Field
The invention relates to the technical field of 3D printing equipment, in particular to a concrete spraying device capable of simultaneously stirring, extruding and spraying materials.
Background
In the 3D printing technology, an ejection process is commonly used, and the ejection method is classified into dry ejection, wet ejection, and wet ejection. The dry spraying has high spraying speed, serious dust pollution and rebound conditions, certain limitation on use, low dust concentration and low rebound rate of a wet spraying machine compared with a dry spraying machine, low initial strength of concrete due to the increase of a water-cement ratio, improved rebound condition, easy control of material matching and higher working efficiency compared with a dry mixing method. The sprayed concrete is preferably sprayed by a wet spraying process.
The earliest introduction of China is a double-tank dry spraying machine which can continuously operate, but the defects of high labor intensity and low efficiency are gradually eliminated. In the seventies or so, a rotor type dry-spraying concrete sprayer is developed in China, and the rotary type dry-spraying concrete sprayer is widely applied and popularized at that time due to the fact that the machine type is simple and the operation and maintenance are convenient, but the rotary type dry-spraying concrete sprayer is limited by the defects that a material cavity is easy to block and cannot carry out wet spraying operation, and is gradually replaced by a concrete sprayer of a subsequent pneumatic feeding machine set. However, because the wet spraying machine is manually fed, the labor intensity is high, the efficiency is low, the defects that the water-cement ratio of the material is uneven, the spraying quality, particularly the uniformity, is difficult to control are easily caused, and the research focus of researchers gradually turns to the wet spraying machine.
Magnesium Phosphate Cement (MPC) is an air-hardening type cementing material prepared by mixing over-burnt Magnesium oxide, soluble phosphate, retarder and mineral admixture according to a certain proportion. As a new type of cement, MPC is different from traditional portland cement and other inorganic cement in production process, hydration mechanism and hydration product, which makes them different in performance. The hydration process of MPC is an exothermic reaction based on acid-base neutralization reaction, and can be produced at room temperature, and the finally obtained coagulation hardening body has the characteristics of ceramic product, so that it possesses the advantages of quick coagulation, early strength, good mechanical property, good volume stability, good impermeability and good durability, etc. The excellent properties make the material have good application prospects in the aspects of quick repair materials of engineering structures, refractory materials, biological adhesives, solidified heavy metals, radioactive wastes and the like. As a repairing material of a concrete structure, the MPC has excellent performance, so that the MPC has great advantages in the first-aid repair and reinforcement of civil buildings such as airfield runways, bridges and roads and military engineering.
The fineness of the magnesium oxide has a significant influence on the setting time of the MPC, and the smaller the particle size of the magnesium oxide particles, the shorter the setting time of the MPC slurry. MgO used for preparing MPC is generally prepared by calcining magnesium carbonate at a high temperature of more than 1000 ℃ (usually 1700 ℃), then grinding, and the activity of the generated MgO is different and the reaction rate is different when the generated MgO participates in hydration reaction. Studies have shown that as the calcination temperature increases, the specific surface area and pore volume of the magnesium oxide decreases and the chemical activity decreases. Borax is a very effective retarder for magnesium phosphate cement, the setting time of MPC is prolonged along with the increase of the mixing amount of borax, but the retarding effect of borax is usually at the expense of the early strength of MPC. To avoid this problem, many researchers have developed different composite retarders to increase the setting time of MPC without reducing its early compressive strength.
As can be seen from the above, the conventional spraying device needs to mix the material and the mixing water in advance, and pump the slurry to the nozzle by the pump. Time is consumed and equipment is added for mixing and transmitting the slurry, and a retarder is added to avoid quick setting, so that the production cost is increased, and the use effect of concrete with special performance (such as magnesium phosphate cement) is limited.
Disclosure of Invention
The invention mainly solves the technical problem that the spraying use technology of the quick-setting concrete materials (especially magnesium phosphate cement) in the prior art is limited, and provides a concrete spraying device for simultaneously stirring, extruding and spraying the materials, so that the stirring, extruding and spraying are synchronously completed, the concrete spraying device is suitable for spraying the quick-setting concrete materials, and the production efficiency is improved.
The invention provides a concrete spraying device for simultaneously stirring, extruding and spraying materials, which comprises: the device comprises a main transmission motor, a dry powder homogenizing device, a water inlet manifold block, a powder-liquid stirring pipe, a hollow extrusion shaft, a hollow transmission shaft and an injection pipe;
the dry powder homogenizing device is communicated with the powder-liquid stirring pipe;
a hollow extrusion shaft and a hollow transmission shaft which are in transmission connection are arranged in the powder-liquid stirring pipe; the hollow extrusion shaft is provided with a stirring blade group;
the hollow transmission shaft is in transmission connection with the main transmission motor, a conveying roller is arranged on the hollow transmission shaft, the tail part of the hollow transmission shaft extends out of the liquid stirring pipe, a water inlet integrated block is arranged at the tail part of the hollow transmission shaft, and a water hole matched with the water inlet integrated block is arranged at the tail part of the hollow transmission shaft; the head of the hollow transmission shaft is not sealed with the hollow extrusion shaft;
a central air inlet pipe is movably arranged in the hollow extrusion shaft and the hollow transmission shaft, and a gap is formed between the hollow transmission shaft and the central air inlet pipe;
the powder-liquid stirring pipe is connected with the injection pipe, and a support sheet is arranged between the powder-liquid stirring pipe and the injection pipe;
the support sheet is movably connected with the end part of the hollow extrusion shaft, and the support sheet is provided with a central air hole connected with the central air inlet pipe; the support sheet is provided with a plurality of extrusion channels.
Preferably, a plurality of outer air inlet pipes are arranged outside the powder-liquid stirring pipe;
an upper air inlet manifold block and a lower air inlet manifold block are respectively arranged on two sides of the powder-liquid stirring pipe;
the upper air inlet manifold block and the lower air inlet manifold block are communicated with corresponding outer air inlet pipes;
compressed air is introduced into the upper air inlet manifold block and the lower air inlet manifold block.
Preferably, the tail end of the outer side air inlet pipe is provided with an air path baffle ring, and the inner ring and the outer ring of the air path baffle ring are provided with sealing rings.
Preferably, a driving gear is arranged on the main transmission motor;
a driven gear is arranged on the hollow transmission shaft;
the driving gear is meshed with the driven gear.
Preferably, the water inlet manifold block is arranged on the hollow transmission shaft through a water inlet manifold block base and is pressed through a water inlet manifold block pressing cover.
Preferably, the dry powder homogenizing device and the powder-liquid stirring pipe are connected together by a homogenizing fixing clamp assembly;
the tail end of the powder-liquid stirring pipe is provided with a dry powder plug;
the square positioning part of the dry powder plug is embedded on the homogenizing fixing clamp assembly, and the rotation stopping block on the dry powder plug is matched with the rotation stopping groove at the tail end of the powder-liquid stirring pipe to keep the powder-liquid stirring pipe from rotating.
Preferably, a rolling dragon side coupler is arranged on the hollow transmission shaft;
the hollow extrusion shaft is provided with a stirring side coupler;
the rolling side coupler is meshed with the stirring side coupler.
Preferably, the powder-liquid stirring pipe is connected with the injection pipe through a stirring pipe side fixing block and a spray head side fixing block.
Preferably, a plurality of outer side cyclone holes are distributed on the outer side of the supporting sheet.
Preferably, the input end of the dry powder homogenizing device is connected with the bin, the dry powder homogenizing device is further connected with a closed circulating material conveying pipeline, and the closed circulating material conveying pipeline is connected with the dry powder bin;
the closed circulating material conveying pipeline comprises a primary recovery pipeline, a secondary recovery pipeline and a dry powder lifting pipeline which are sequentially connected.
The concrete spraying device capable of simultaneously stirring, extruding and spraying materials is provided with the main transmission motor, the dry powder homogenizing device, the water inlet manifold block, the powder-liquid stirring pipe, the hollow extruding shaft, the hollow transmission shaft and the spraying pipe, can synchronously complete stirring, extruding and spraying, simplifies the spraying construction process, improves the production efficiency, can use the magnesium phosphate cement with low calcining temperature, reduces or does not use a retarder, not only improves the early strength of the sprayed materials, but also greatly reduces the material production cost, and provides a way for the application and popularization of the quick-setting concrete materials (particularly the magnesium phosphate cement). The compressed air forms an inner layer of airflow and an outer layer of airflow in the spray pipe, and the extruded wet materials can be scattered and strongly sprayed out, so that the requirement of uniform distribution of the sprayed materials is met. In the construction process, the dry powder material realizes closed circulation, the transmission energy consumption is low, the dust leakage is avoided, and the energy is saved and the environment is protected. Compact structure adopts modular structure design, and is small, easily dismouting maintenance, and it is convenient to wash, can use by a plurality of shower nozzles combination.
Drawings
FIG. 1 is a schematic structural view of a concrete spraying apparatus for simultaneously stirring, extruding and spraying materials provided by the present invention;
FIG. 2 is a schematic view of a water inlet section;
FIG. 3 is a schematic diagram of the processes of dry powder delivery, mixing, extrusion and injection in the inner cavity of the nozzle;
FIG. 4 is a schematic distribution diagram of the material outlet and the gas path outlet;
FIG. 5 is a schematic view of a closed circulation feed line;
FIG. 6 is a schematic view of the arrangement of the dry powder bin and the closed circulation line fixing clamp assembly;
FIG. 7 is a schematic view showing the construction flow of the concrete spraying apparatus according to the present invention in which the mixing, extruding and spraying of the material are performed simultaneously.
Reference numerals: 101. a main transmission motor 102, a motor fixing plate 103, a transmission gear cover plate 104, a driving gear 105, a driven gear 106, a key 201, a water inlet manifold block gland 202, a water inlet manifold block 203, a water inlet manifold block base 204, a lip seal ring 205, a first bearing 206, a second bearing 301, a material homogenizing fixing clamp assembly 302, a dry powder homogenizing device 303, a primary recovery pipeline 304, a secondary recovery pipeline 305, a dry powder lifting pipeline 306, a primary recovery pipeline fixing clamp assembly 307, a secondary recovery pipeline fixing clamp assembly 308, a dry powder lifting pipeline fixing clamp assembly 309, a dry powder bin 401, a central air inlet pipe 402, a hollow transmission shaft 403, a powder and liquid stirring pipe 404, an outer air inlet pipe 405, a transmission roller 406, a roller side coupling 407, a stirring side coupling 408, a stirring blade group 409, a hollow extrusion shaft 409, 410. the device comprises an air path baffle ring, 411. a sealing ring, 412. an upper air inlet manifold block, 413. a lower air inlet manifold block, 414. a fixed flange, 415. a positioning bolt, 416. a dry powder plug, 501. an injection pipe, 502. a spray head side fixed block, 503. a stirring pipe side fixed block, 601. a support sheet, 602. a central air hole, 603. an extrusion channel, 604. an outer side cyclone hole.
Detailed Description
In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some but not all of the relevant aspects of the present invention are shown in the drawings.
As shown in fig. 1 to 3, a concrete spraying apparatus for simultaneously stirring, extruding and spraying materials according to an embodiment of the present invention includes: the device comprises a main transmission motor 101, a dry powder homogenizing device 302, a water inlet manifold block 202, a powder-liquid stirring pipe 403, a hollow extrusion shaft 409, a hollow transmission shaft 402 and an injection pipe 501.
The dry powder homogenizing device 302 is connected with a dry powder bin 309 to supply materials to the device, and dry powder enters from a feeding hole of the dry powder homogenizing device 302. The dry powder homogenizing device 302 is communicated with a powder-liquid stirring pipe 403; the dry powder homogenizing device 302 and the powder-liquid stirring pipe 403 are connected together by the homogenizing fixing clamp assembly 301 and are fastened by bolts, so that dust leakage after the flow direction of dry powder changes is avoided; a dry powder plug 416 is arranged at the tail end of the powder-liquid stirring pipe 403; the square positioning part of the dry powder plug 416 is embedded on the homogenizing fixing clamp assembly 301, and the rotation stopping block on the dry powder plug 416 is matched with the rotation stopping groove at the tail end of the powder-liquid stirring pipe 403 to keep the powder-liquid stirring pipe 403 from rotating.
A hollow extrusion shaft 409 and a hollow transmission shaft 402 which are in transmission connection are arranged in the powder-liquid stirring pipe 403; specifically, a roller side coupling 406 is arranged on the hollow transmission shaft 402; the hollow extrusion shaft 409 is provided with a stirring side coupler 407; the auger-side coupling 406 is engaged with the stirring-side coupling 407. The hollow transmission shaft 402 is in transmission connection with the main transmission motor 101. Specifically, a driving gear 104 is arranged on the main transmission motor 101; the hollow transmission shaft 402 is provided with a driven gear 105; the driven gear 105 is mounted on the hollow transmission shaft 402 through the second bearing 206 and the key 106, the main transmission motor 101 works, and the driving gear 104 is meshed with the driven gear 105 to realize transmission, so as to drive the hollow transmission shaft 402 to rotate. The driving gear 104 and the driven gear 105 are externally provided with a transmission gear cover plate 103, and the transmission gear cover plate 103 is fixed on the homogenizing fixing clamp assembly 301 through bolts, so that the main transmission motor 101 assembly is fixed, and the movement of the dry powder plug 416 is fixed.
The hollow transmission shaft 402 is provided with a conveying roller 405, and the conveying roller 405 rotates to push materials to advance. A liquid stirring pipe 403 extends out of the tail part of the hollow transmission shaft 402; the head of the hollow drive shaft 402 is not sealed to the hollow extrusion shaft 409.
The hollow extrusion shaft 409 is provided with a stirring blade group 408, the hollow transmission shaft 402 drives the stirring blade group 408 on the hollow extrusion shaft 409 to rotate in the same direction through the rolling side coupler 406 and the stirring side coupler 407, and the mixing, stirring and extrusion of the materials and the mixed water are realized in the interval.
A central air inlet pipe 401 is movably arranged inside the hollow extrusion shaft 409 and the hollow transmission shaft 402, and a gap is formed between the hollow transmission shaft 402 and the central air inlet pipe 401; the hollow drive shaft 402 rotates, the center intake pipe 401 does not rotate, and the center intake pipe 401 also functions to support the hollow drive shaft 402. Compressed air passes through the central air inlet pipe 401, and an outlet of the central air inlet pipe is arranged in a port at the front end of the hollow transmission shaft 402, so that materials extruded from the powder-liquid stirring pipe 403 can be blown away.
The tail of the hollow transmission shaft 402 is provided with the water inlet manifold block 202, and the tail of the hollow transmission shaft 402 is provided with water holes matched with the water inlet manifold block 202. Specifically, the water inlet manifold block 202 is mounted on the hollow transmission shaft 402 through the water inlet manifold block base 203 and is pressed by the water inlet manifold block pressing cover 201. In this embodiment, after the external mixing water enters the water inlet manifold 202, the external mixing water enters the gap between the hollow transmission shaft 402 and the central air inlet pipe 401 through the water holes at the tail end of the hollow transmission shaft 402, flows out from the gap of the rolling dragon side coupler 406, and is mixed with the material.
Specifically, the water inlet manifold block base 203, the water inlet manifold block 202 and the water inlet manifold block gland 201 are fixed on the motor fixing plate 102 by bolts, and the outer end of the water inlet manifold block base 203 is sealed by the lip-shaped sealing ring 204, so that the mixed water does not leak when the hollow transmission shaft 402 rotates; also, the outer end of the cover 201 of the inlet manifold is supported by the lip seal 204 and the first bearing 205 to prevent the mixing water from leaking and chattering of the longer central inlet pipe 401.
The powder-liquid stirring pipe 403 is connected with the injection pipe 501, and a support sheet 601 is arranged between the powder-liquid stirring pipe 403 and the injection pipe 501. As shown in fig. 4, the support sheet 601 is movably connected to an end of the hollow extrusion shaft 409, and the support sheet 601 is provided with a central air hole 602 connected to the central air inlet pipe 401; the support plate 601 is provided with a plurality of extrusion channels 603. A plurality of outer spiral holes 604 are distributed on the outer side of the support plate 601. Specifically, the powder-liquid stirring pipe 403 is connected to the injection pipe 501 through a stirring pipe side fixing block 503 and a nozzle side fixing block 502. The rotary hollow extrusion shaft 409 penetrates through a central air hole 602 of the support piece 601, the inner wall of a second layer of hole of the inner ring of the support piece 601 is embedded at the front end of the powder-liquid stirring pipe 403, and the outer layer of the support piece 601 is clamped and fixed with the air pipe side fixing block 503 through the spray head side fixing block 502.
On the basis of the scheme, a plurality of outer air inlet pipes 404 are arranged outside the powder-liquid stirring pipe 403; an upper air inlet manifold block 412 and a lower air inlet manifold block 413 are respectively arranged on two sides of the powder-liquid stirring pipe 403; the upper and lower intake manifold blocks 412 and 413 are communicated with the corresponding outer intake pipe 404; the upper intake manifold block 412 and the lower intake manifold block 413 are supplied with compressed air. The upper air inlet manifold block 412 and the lower air inlet manifold block 413 form an included angle with the axial direction of the powder-liquid stirring pipe 403. After passing through the upper air inlet manifold block 412 and the lower air inlet manifold block 413 with spatial angles, compressed air forms a cyclone in the outer air inlet pipe 404, passes through the outer cyclone hole 604 of the support sheet 601, enters the injection pipe 501, gathers extruded and blown materials, and then injects the gathered materials out of the injection pipe 501.
An air channel baffle ring 410 is installed at the tail end of the outer side air inlet pipe 404, and a sealing ring 411 is installed on the inner ring and the outer ring of the air channel baffle ring 410, so that compressed air is prevented from leaking from the rear end. Meanwhile, the gas baffle ring 410 is fixed at the front end of the material homogenizing fixing clamp assembly 301 by a fixing flange 414, and the gas baffle ring 410 and the outer air inlet pipe 404 are limited in movement and rotation by a positioning bolt 415.
On the basis of the above scheme, as shown in fig. 5 and 6, an input end of the dry powder homogenizing device 302 is connected to a bin, and the dry powder homogenizing device 302 is further connected to a closed circulating material conveying pipeline, and the closed circulating material conveying pipeline is connected to the dry powder bin 309; the closed circulation conveying pipeline comprises a primary recovery pipeline 303, a secondary recovery pipeline 304 and a dry powder lifting pipeline 305 which are connected in sequence. The dry powder homogenizing device 302 and the primary recovery pipeline 303 are fixed through a primary recovery pipeline fixing clamp component 306, the primary recovery pipeline 303 and the secondary recovery pipeline 304 are fixed through a secondary recovery pipeline fixing clamp component 307, and the secondary recovery pipeline 304 and the dry powder lifting pipeline 305 are fixed through a dry powder lifting pipeline fixing clamp component 308.
In order to ensure the continuous supply of dry powder materials, the invention designs a square stepped closed circulating material conveying pipeline including a dry powder bin 309, so that redundant materials which do not enter a powder-liquid stirring pipe 403 return to the dry powder bin 309 through the closed circulating material conveying pipeline and then enter the powder-liquid stirring pipe 403 through the circulating pipeline; the circulating pipeline is connected by adopting a closed fixing clamp assembly, so that dust leakage is avoided; the dry powder silo 309 may contain a metered amount of dry powder material or may receive a continuous input of material from an external circulation input.
As shown in FIG. 7, the powder material enters a spray head powder-liquid mixing pipe 403, and the mixing, extrusion and spraying are completed synchronously, so that the quick-setting concrete is suitable for quick-setting concrete materials, and the retarder is reduced or not used. The working process of the concrete spraying device for simultaneously stirring, extruding and spraying materials comprises the following steps:
the materials in the dry powder bin 309 are conveyed through the dry powder lifting pipeline 305, most of the materials entering the pipeline of the dry powder homogenizing device 302 enter the powder-liquid stirring pipe 403 through the feeding hole of the homogenizing fixing clamp assembly 301, and then are pushed by the conveying roller 405 on the hollow transmission shaft 402 to reach the position near the roller side coupler 406 at the front end of the powder-liquid stirring pipe 403. The mixed water enters from the water inlet of the water inlet manifold block 202 fixed on the motor fixing plate 102, flows through the gap (about 1mm) between the hollow transmission shaft 402 and the central air inlet pipe 401, and is mixed with the powder at the water outlet of the rolling dragon side coupler 406.
The screw-side coupling 406 and the stirring-side coupling 407 are kept in a meshed state, the hollow extrusion shaft 409 is driven to rotate in the same direction, the stirring blade group 408 on the hollow extrusion shaft 409 stirs and mixes the powder material and the stirring water, and meanwhile, the mixed material is extruded into the injection pipe 501 through the extrusion channel 603 on the supporting sheet 601;
the front end of the hollow extrusion shaft 409 is processed into an inclined plane and penetrates through an inner ring hole of the support sheet 601, the central air inlet pipe 401 penetrates through the hollow transmission shaft 402, the rolling side coupler 406, the stirring side coupler 407 and the hollow extrusion shaft 409, compressed air is sent to the central area of the injection pipe 501, and the concentricity of the hollow transmission shaft 402 and the hollow extrusion shaft 409 is guaranteed to be in a controllable range; the inclined surface at the front end of the rotating hollow extrusion shaft 409 disperses the compressed air blown out by the central air inlet pipe 401 to the periphery and also blows out the wet material mass extruded by the stirring extrusion channel 603;
the main jet air flow enters the cavity between the outer air inlet pipe 404 and the powder-liquid stirring pipe 403 from the air passages of the upper air inlet manifold block 412 and the lower air inlet manifold block 413 on the outer side to form a cyclone, enters the jet pipe 501 through the outer cyclone hole 604 of the supporting sheet 601, and wraps and blows the materials blown away by the central air inlet pipe 401 to the outlet of the jet pipe 501.
Most of the materials entering the pipeline of the dry powder homogenizing device 302 enter the powder-liquid stirring pipe 403 through the feeding hole of the homogenizing fixing clamp assembly 301, and the rest of a small amount of the materials are pushed to the discharging hole of the primary recovery pipeline fixing clamp assembly 306 by rolling and enter the primary recovery pipeline 303; similarly, the waste water flows through a discharge hole of a secondary recovery pipeline fixing clamp assembly 307 and turns to enter a secondary recovery pipeline 304 at a lower layer; the powder continues to be pushed in, and returns to the dry powder bin 309 at the outlet of the dry powder lifting pipeline fixing clamp assembly 308, and enters the closed circulation pipeline of the powder again.
The dry powder bin 309 can contain a fixed amount of dry powder material to complete a small number of spray tests; the material conveying pipeline can be connected externally to carry out continuous spraying construction.
The inner passages of the outer air inlet upper integrated block 412 and the outer air inlet lower integrated block 413 can be additionally provided with liquid inlet interfaces and passages, and liquid additive slurry or liquid is brought into the injection pipe 501 to form aerial fog by negative pressure generated by blowing compressed air, and is mixed with materials in the injection pipe 501 and then is sprayed out together. If the pigment slurry is added, the artistic effect can also be achieved.
The invention adopts the modular design, is convenient for disassembly, assembly, cleaning and maintenance; the dry powder conveying process is closed, and dust leakage is avoided.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: modifications of the technical solutions described in the embodiments or equivalent replacements of some or all technical features may be made without departing from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A concrete spraying device for simultaneously stirring, extruding and spraying materials is characterized by comprising: the device comprises a main transmission motor (101), a dry powder homogenizing device (302), a water inlet manifold block (202), a powder-liquid stirring pipe (403), a hollow extrusion shaft (409), a hollow transmission shaft (402) and an injection pipe (501);
the dry powder homogenizing device (302) is communicated with a powder-liquid stirring pipe (403);
a hollow extrusion shaft (409) and a hollow transmission shaft (402) which are in transmission connection are arranged in the powder-liquid stirring pipe (403); the hollow extrusion shaft (409) is provided with a stirring blade group (408);
the hollow transmission shaft (402) is in transmission connection with the main transmission motor (101), the hollow transmission shaft (402) is provided with a conveying roller (405), the tail part of the hollow transmission shaft (402) extends out of the liquid stirring pipe (403), the tail part of the hollow transmission shaft (402) is provided with the water inlet manifold block (202), and the tail part of the hollow transmission shaft (402) is provided with water holes matched with the water inlet manifold block (202); the head of the hollow drive shaft (402) is not sealed to the hollow extrusion shaft (409);
a central air inlet pipe (401) is movably arranged in the hollow extrusion shaft (409) and the hollow transmission shaft (402), and a gap is formed between the hollow transmission shaft (402) and the central air inlet pipe (401);
the powder-liquid stirring pipe (403) is connected with the injection pipe (501), and a supporting sheet (601) is arranged between the powder-liquid stirring pipe (403) and the injection pipe (501);
the support sheet (601) is movably connected with the end part of the hollow extrusion shaft (409), and a central air hole (602) connected with the central air inlet pipe (401) is formed in the support sheet (601); the support sheet (601) is provided with a plurality of extrusion channels (603).
2. The concrete spraying device for simultaneously stirring, extruding and spraying materials as claimed in claim 1, wherein a plurality of outer air inlet pipes (404) are arranged outside the powder-liquid stirring pipe (403);
an upper air inlet manifold block (412) and a lower air inlet manifold block (413) are respectively arranged on two sides of the powder-liquid stirring pipe (403);
the upper air inlet manifold block (412) and the lower air inlet manifold block (413) are communicated with corresponding outer air inlet pipes (404);
compressed air is introduced into the upper air inlet manifold block (412) and the lower air inlet manifold block (413).
3. The concrete spraying device capable of simultaneously stirring, extruding and spraying materials as claimed in claim 2, wherein an air baffle ring (410) is mounted at the tail end of the outer air inlet pipe (404), and sealing rings (411) are mounted on the inner ring and the outer ring of the air baffle ring (410).
4. The concrete spraying device for mixing, extruding and spraying materials simultaneously according to claim 1, wherein a driving gear (104) is arranged on the main transmission motor (101);
a driven gear (105) is arranged on the hollow transmission shaft (402);
the driving gear (104) is meshed with the driven gear (105).
5. The concrete spraying apparatus for mixing, extruding and spraying concrete simultaneously according to claim 1 or 4, wherein the water inlet manifold block (202) is mounted on the hollow driving shaft (402) through a water inlet manifold block base (203) and is pressed by a water inlet manifold block pressing cover (201).
6. The concrete spraying device capable of stirring, extruding and spraying materials simultaneously as claimed in claim 1, wherein the dry powder homogenizing device (302) and the powder-liquid stirring pipe (403) are connected together by a homogenizing fixing clamp assembly (301);
a dry powder plug (416) is arranged at the tail end of the powder-liquid stirring pipe (403);
the square positioning part of the dry powder plug (416) is embedded on the homogenizing fixing clamp assembly (301), and the rotation stopping block on the dry powder plug (416) is matched with the rotation stopping groove at the tail end of the powder-liquid stirring pipe (403) to keep the powder-liquid stirring pipe (403) not to rotate.
7. The concrete spraying device for mixing, extruding and spraying materials simultaneously according to claim 1, wherein a roller side coupling (406) is arranged on the hollow transmission shaft (402);
a stirring side coupling (407) is arranged on the hollow extrusion shaft (409);
the screw rolling side coupling (406) is meshed with the stirring side coupling (407).
8. The concrete spraying apparatus for mixing, extruding and spraying materials simultaneously according to claim 1, wherein the powder-liquid mixing pipe (403) is connected to the spraying pipe (501) through a mixing pipe side fixing block (503) and a head side fixing block (502).
9. The concrete spraying device for mixing, extruding and spraying materials simultaneously according to claim 1, wherein a plurality of outer cyclone holes (604) are distributed on the outer side of the supporting sheet (601).
10. The concrete spraying device for simultaneously stirring, extruding and spraying materials as claimed in claim 1, wherein the input end of the dry powder homogenizing device (302) is connected with a storage bin, the dry powder homogenizing device (302) is further connected with a closed circulation conveying pipeline, and the closed circulation conveying pipeline is connected with the dry powder storage bin (309);
the closed circulating material conveying pipeline comprises a primary recovery pipeline (303), a secondary recovery pipeline (304) and a dry powder lifting pipeline (305) which are sequentially connected.
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| CN202110664238.4A CN113338626B (en) | 2021-06-16 | 2021-06-16 | Concrete injection device capable of simultaneously stirring, extruding and injecting materials |
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| CN113338626B CN113338626B (en) | 2022-07-01 |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3119811A1 (en) * | 1981-05-19 | 1982-12-16 | Georg Schöndorfer GmbH & Co KG, 8230 Bad Reichenhall | DEVICE FOR MIXING AND SPRAYING WET CONCRETE |
| CN101122234A (en) * | 2007-08-14 | 2008-02-13 | 陕西金石混凝土科技发展有限公司 | Construction method for using liquid quick coagulator for injecting concrete |
| CN101487260A (en) * | 2009-02-12 | 2009-07-22 | 杭州求是支护器材有限公司 | Concrete sprayer with pneumatic conveyer |
| CN102817622A (en) * | 2012-10-08 | 2012-12-12 | 江苏中机矿山设备有限公司 | Negative pressure type concrete wet-spray machine set |
| CN102814863A (en) * | 2012-08-28 | 2012-12-12 | 陕西金石混凝土科技发展有限公司 | Concrete mixing bunker as well as concrete wet-process injection system and method based on concrete mixing bunker |
| CN103104266A (en) * | 2013-03-07 | 2013-05-15 | 江苏鼎甲科技有限公司 | Wet-type concrete spraying unit |
| CN207808052U (en) * | 2017-11-27 | 2018-09-04 | 王水虎 | Heavy duty detergent lift dry powder mortar mixer |
| CN110883901A (en) * | 2019-11-28 | 2020-03-17 | 大连学庆铭锋数控技术有限公司 | 3D printing spray head capable of simultaneously stirring and extruding materials and continuously and spirally feeding wires |
| CN212250060U (en) * | 2020-06-04 | 2020-12-29 | 重庆渝交重工机械有限公司 | Concrete sprayer |
-
2021
- 2021-06-16 CN CN202110664238.4A patent/CN113338626B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3119811A1 (en) * | 1981-05-19 | 1982-12-16 | Georg Schöndorfer GmbH & Co KG, 8230 Bad Reichenhall | DEVICE FOR MIXING AND SPRAYING WET CONCRETE |
| CN101122234A (en) * | 2007-08-14 | 2008-02-13 | 陕西金石混凝土科技发展有限公司 | Construction method for using liquid quick coagulator for injecting concrete |
| CN101487260A (en) * | 2009-02-12 | 2009-07-22 | 杭州求是支护器材有限公司 | Concrete sprayer with pneumatic conveyer |
| CN102814863A (en) * | 2012-08-28 | 2012-12-12 | 陕西金石混凝土科技发展有限公司 | Concrete mixing bunker as well as concrete wet-process injection system and method based on concrete mixing bunker |
| CN102817622A (en) * | 2012-10-08 | 2012-12-12 | 江苏中机矿山设备有限公司 | Negative pressure type concrete wet-spray machine set |
| CN103104266A (en) * | 2013-03-07 | 2013-05-15 | 江苏鼎甲科技有限公司 | Wet-type concrete spraying unit |
| CN207808052U (en) * | 2017-11-27 | 2018-09-04 | 王水虎 | Heavy duty detergent lift dry powder mortar mixer |
| CN110883901A (en) * | 2019-11-28 | 2020-03-17 | 大连学庆铭锋数控技术有限公司 | 3D printing spray head capable of simultaneously stirring and extruding materials and continuously and spirally feeding wires |
| CN212250060U (en) * | 2020-06-04 | 2020-12-29 | 重庆渝交重工机械有限公司 | Concrete sprayer |
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|---|---|
| CN113338626B (en) | 2022-07-01 |
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